Help me please!
What's the 2nd test?

#include <iostream>
using namespace std;

int main(int argc, char *argv[])
{
    int N;
    int a[11][11] = {0};
    cin >> N;
    int xi, yi;
    for (int i = 0; i < N; i++)
    {
        cin >> xi >> yi;
        a[xi][yi] = 1;
    }

    int x[102] = {0};
    int y[102] = {0};
    int x0;
    int y0;
    int s, l;
        for (int i = 1; i <= 10; i++)
        {
            for (int j = 1; j <= 10; j++)
            {
                if (a[i][j])
                {
                    cout << i << ' ' << j << endl;
                    s = 1;
                    l = 1;
                    x[1] = i;
                    y[1] = j;
                    while ((l < N) && (x[l]))
                    {
                        x0 = x[l];
                        y0 = y[l];
                        //cout << x0 << '.' << y0 << " : ";
                        a[x0][y0] = 0;
                        if ((x0 < 10) && (a[x0+1][y0]))
                        {
                            cout << 'R';
                            a[x0+1][y0] = 0;
                            s++;
                            x[s] = x0+1;
                            y[s] = y0;
                        }
                        if ((y0 < 10) && (a[x0][y0+1]))
                        {
                            cout << 'T';
                            a[x0][y0+1] = 0;
                            s++;
                            x[s] = x0;
                            y[s] = y0+1;
                        }
                        if ((x0 > 1) && (a[x0-1][y0]))
                        {
                            cout << 'L';
                            a[x0-1][y0] = 0;
                            s++;
                            x[s] = x0-1;
                            y[s] = y0;
                        }
                        if ((y0 > 1) && (a[x0][y0-1]))
                        {
                            cout << 'B';
                            a[x0][y0-1] = 0;
                            s++;
                            x[s] = x0;
                            y[s] = y0-1;
                        }
                        l++;
                        cout << ',' << endl;
                    }
                }
            }
        }
        cout << '.';
    return 0;
}